Stereoacuity and Multifocal Intraocular Lenses - a Systematic Review
Maja Bohac1, Mateja Jagic1, Alma Biscevic1,2
1University Eye Hospital Svjetlost, School of Medicine University of Rijeka, Zagreb, Croatia.
Summary
Multifocal intraocular lenses may impact stereoacuity, with monofocal lenses showing better results. Bilateral implantation is recommended when using multifocal lenses to preserve depth perception.
Area of Science:
- Ophthalmology
- Vision Science
Background:
- Stereoacuity, a sophisticated binocular function for depth perception, is less studied in patients with multifocal intraocular lenses (IOLs) compared to glare and contrast sensitivity.
- Few publications specifically address binocular vision testing outcomes in individuals with multifocal IOLs.
Purpose of the Study:
- To review and synthesize the results of binocular vision assessments in patients who have undergone cataract surgery with multifocal IOL implantation.
Main Methods:
- Literature review and comprehensive internet search.
- Inclusion of studies from major scientific databases: PubMed, Scopus, Web of Science, and Google Scholar.
Main Results:
- Monofocal IOLs demonstrated statistically significant superior stereoacuity compared to multifocal IOLs when measured with a near addition.
- Refractive multifocal IOLs showed better stereoacuity than diffractive-based multifocal IOLs using the TNO test.
- The Titmus test yielded significantly higher stereoacuity scores than the TNO test across comparable lens types.
Conclusions:
- Stereoacuity is resilient to multifocality-induced retinal blur, unlike other visual degradations.
- Multifocal IOLs do not induce greater functional aniseikonia than monofocal IOLs.
- To mitigate compromised stereoacuity from unilateral multifocal IOL implantation, bilateral implantation is advised.
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